BECKHOFF AX5805 Installation - Manual (Page 87)

Product description
AX5805 85
3.6.5.16 Description of the SMS safety function
Figure 39: Description of the Safe Maximum Speed function (SMS)
The SMS function monitors the motor’s maximum speed and is activated by setting the parameters
n_pos_max or n_neg_max to a value not equal to 0. If either n_pos_max or n_neg_max is not equal to 0 and
one of the limits is exceeded, the Error Reaction function (STO or SS1) as defined by ErrorReaction_SMS is
executed.
Parameters for axis 1:
Index Name Description Unit Default
value
0x66AA n_pos_max_SMS
32Bit Maximum positive speed Increments
per ms 0x0000
0x66AC n_neg_max_SMS
32Bit Maximum negative speed Increments
per ms 0x0000
0x66AD Error Reaction
SMS Maximum time until the activation of
the SMS safety function -- 0x66400001
(STO)
Parameters for axis 2:
Index Name Description Unit Default
value
0x6EAA n_pos_max_SMS
32Bit Maximum positive speed Increments
per ms 0x0000
0x6EAC n_neg_max_SMS
32Bit Maximum negative speed Increments
per ms 0x0000
0x6EAD Error Reaction
SMS Maximum time until the activation of
the SMS safety function -- 0x66400001
(STO)
SMS
1
t
Speed
t
n_pos_max
Torque
on Motor
On
t
n_neg_max
activated by parameter